drm/i915/gvt: Fix dma-buf display blur issue on CFL

Commit c3b5a8430daad ("drm/i915/gvt: Enable gfx virtualiztion for CFL")
added the support on CFL. The vgpu emulation hotplug support on CFL was
supposed to be included in that patch. Without the vgpu emulation
hotplug support, the dma-buf based display gives us a blur face.

So fix this issue by adding the vgpu emulation hotplug support on CFL.

Fixes: c3b5a8430daad ("drm/i915/gvt: Enable gfx virtualiztion for CFL")
Signed-off-by: Tina Zhang <tina.zhang@intel.com>
Acked-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20200227010041.32248-1-tina.zhang@intel.com

diff --git a/drivers/gpu/drm/i915/gvt/display.c b/drivers/gpu/drm/i915/gvt/display.c
index 9bfc0ae301576582b5e90734c2f96e1829ece235..14e139e66e4534876a73f5e34372c082cf60e7a8 100644 (file)
--- a/drivers/gpu/drm/i915/gvt/display.c
+++ b/drivers/gpu/drm/i915/gvt/display.c
@@ -459,7 +459,8 @@ void intel_vgpu_emulate_hotplug(struct intel_vgpu *vgpu, bool connected)
        struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv;
 
        /* TODO: add more platforms support */
-       if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) {
+       if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv) ||
+               IS_COFFEELAKE(dev_priv)) {
                if (connected) {
                        vgpu_vreg_t(vgpu, SFUSE_STRAP) |=
                                SFUSE_STRAP_DDID_DETECTED;